3. How to Solder
Solder is an easily meltable alloy of lead and tin used to connect electronic components. Not only does it attach the part to the circuit board, it conducts electricity just like a wire does, allowing the circuit to function as you intended (see Figure 3.1).
FIGURE 3.1 Soldering can look pretty intimidating, but doing it is actually easy. Credit: Wayne and Layne.
Solder Joints
Most electronic kits come with a printed circuit board (PCB), shown in Figure 3.2, to which you solder the components. Typically, a board consists of a sheet ...
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